package com.shuffle.weixin.util;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;

import net.sf.json.JSONArray;
import net.sf.json.JSONException;
import net.sf.json.JSONObject;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.shuffle.weixin.pojo.AccessToken;
import com.shuffle.weixin.pojo.Menu;
import com.shuffle.weixin.pojo.WeixinUser;

/**
 * 公众平台通用接口工具类
 * 
 * @author liuyq
 * @date 2013-08-09
 */
public class WeiXinUtil {
	private static Logger log = LoggerFactory.getLogger(WeiXinUtil.class);

	/**
	 * 发起https请求并获取结果
	 * 
	 * @param requestUrl 请求地址
	 * @param requestMethod 请求方式（GET、POST）
	 * @param outputStr 提交的数据
	 * @return JSONObject(通过JSONObject.get(key)的方式获取json对象的属性值)
	 */
	public static JSONObject httpRequest(String requestUrl, String requestMethod, String outputStr) {
		JSONObject jsonObject = null;
		StringBuffer buffer = new StringBuffer();
		try {
			// 创建SSLContext对象，并使用我们指定的信任管理器初始化
			TrustManager[] tm = { new MyX509TrustManager() };
			SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
			sslContext.init(null, tm, new java.security.SecureRandom());
			// 从上述SSLContext对象中得到SSLSocketFactory对象
			SSLSocketFactory ssf = sslContext.getSocketFactory();

			URL url = new URL(requestUrl);
			HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
			httpUrlConn.setSSLSocketFactory(ssf);

			httpUrlConn.setDoOutput(true);
			httpUrlConn.setDoInput(true);
			httpUrlConn.setUseCaches(false);
			// 设置请求方式（GET/POST）
			httpUrlConn.setRequestMethod(requestMethod);

			if ("GET".equalsIgnoreCase(requestMethod))
				httpUrlConn.connect();

			// 当有数据需要提交时
			if (null != outputStr) {
				OutputStream outputStream = httpUrlConn.getOutputStream();
				// 注意编码格式，防止中文乱码
				outputStream.write(outputStr.getBytes("UTF-8"));
				outputStream.close();
			}

			// 将返回的输入流转换成字符串
			InputStream inputStream = httpUrlConn.getInputStream();
			InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
			BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

			String str = null;
			while ((str = bufferedReader.readLine()) != null) {
				buffer.append(str);
			}
			bufferedReader.close();
			inputStreamReader.close();
			// 释放资源
			inputStream.close();
			inputStream = null;
			httpUrlConn.disconnect();
			jsonObject = JSONObject.fromObject(buffer.toString());
		} catch (ConnectException ce) {
			log.error("Weixin server connection timed out.");
		} catch (Exception e) {
			log.error("https request error:{}", e);
		}
		return jsonObject;
	}
	
	// 获取access_token的接口地址（GET） 限200（次/天）
	public final static String access_token_url = "https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid=APPID&secret=APPSECRET";
	
	public final static String access_user_url1 = "https://api.weixin.qq.com/cgi-bin/user/get?access_token=ACCESS_TOKEN";

	public final static String access_user_url2 = "https://api.weixin.qq.com/cgi-bin/user/get?access_token=ACCESS_TOKEN&next_openid=NEXT_OPENID";
	
	public final static String access_userInfo_url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=ACCESS_TOKEN&openid=OPENID";
	
	public static void sendMessage(String conext, String openId) {
		
	}
	
	public static List<WeixinUser> getUsers(String accessToken) {
		List<WeixinUser> list = new ArrayList<WeixinUser>();
//		int total = 0;
		int count = 0;
		String nextOpendId = "";
		
//		String requestUrl = access_user_url1.replace("ACCESS_TOKEN", accessToken);
		while (true) {
			String requestUrl = access_user_url2.replace("ACCESS_TOKEN", accessToken).replace("NEXT_OPENID", nextOpendId);
			JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
			if (null != jsonObject) {
				System.out.println(jsonObject.toString());
				
//				total = jsonObject.getInt("total");
				count = jsonObject.getInt("count");
				nextOpendId = jsonObject.getString("next_openid");
				
				if (count == 0) {
					break;
				}
				
				JSONArray arry = jsonObject.getJSONObject("data").getJSONArray("openid");
				for (Object id : arry.toArray()) {
					String requestUrl2 = access_userInfo_url.replace("ACCESS_TOKEN", accessToken).replace("OPENID", id.toString());
					JSONObject json = httpRequest(requestUrl2, "GET", null);
					WeixinUser user = null;
					if (json != null) {
						user = new WeixinUser();
						user.setOpenid(json.getString("openid"));
						user.setNickname(json.getString("nickname"));
						user.setSex(json.getString("sex"));
						user.setLanguage(json.getString("language"));
						user.setCity(json.getString("city"));
						user.setProvince(json.getString("province"));
						user.setCountry(json.getString("country"));
						user.setHeadimgurl(json.getString("headimgurl"));
						user.setSubscribe_time(json.getString("subscribe_time"));
						
						list.add(user);
					}
				}
			}
		} 
		
	
		
		
		return list;
	}
	/**
	 * 获取access_token
	 * 
	 * @param appid 凭证
	 * @param appsecret 密钥
	 * @return
	 */
	public static AccessToken getAccessToken(String appid, String appsecret) {
		AccessToken accessToken = null;

		String requestUrl = access_token_url.replace("APPID", appid).replace("APPSECRET", appsecret);
		JSONObject jsonObject = httpRequest(requestUrl, "GET", null);
		// 如果请求成功
		if (null != jsonObject) {
			try {
				accessToken = new AccessToken();
				accessToken.setToken(jsonObject.getString("access_token"));
				accessToken.setExpiresIn(jsonObject.getInt("expires_in"));
			} catch (JSONException e) {
				accessToken = null;
				// 获取token失败
				log.error("获取token失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"), jsonObject.getString("errmsg"));
			}
		}
		return accessToken;
	}
	
	// 菜单创建（POST） 限100（次/天）
	public static String menu_create_url = "https://api.weixin.qq.com/cgi-bin/menu/create?access_token=ACCESS_TOKEN";
	
	//http请求方式：GET
	public static String menu_query_url = "https://api.weixin.qq.com/cgi-bin/menu/get?access_token=ACCESS_TOKEN";

	/**
	 * 创建菜单
	 * 
	 * @param menu 菜单实例
	 * @param accessToken 有效的access_token
	 * @return 0表示成功，其他值表示失败
	 */
	public static int createMenu(Menu menu, String accessToken) {
		int result = 0;

		// 拼装创建菜单的url
		String url = menu_create_url.replace("ACCESS_TOKEN", accessToken);
		// 将菜单对象转换成json字符串
		String jsonMenu = JSONObject.fromObject(menu).toString();
		// 调用接口创建菜单
		JSONObject jsonObject = httpRequest(url, "POST", jsonMenu);

		if (null != jsonObject) {
			if (0 != jsonObject.getInt("errcode")) {
				result = jsonObject.getInt("errcode");
				log.error("创建菜单失败 errcode:{} errmsg:{}", jsonObject.getInt("errcode"), jsonObject.getString("errmsg"));
			}
		}

		return result;
	}
	
	public static Menu getMenu(String accessToken) {
		Menu menu = null;
		String url = menu_query_url.replace("ACCESS_TOKEN", accessToken);
		JSONObject json = httpRequest(url, "GET", null);
//		{"menu":
//		    {"button":[
//		         {"name":"生活助手","sub_button":[{"type":"click","name":"天气预报","key":"11","sub_button":[]},{"type":"click","name":"公交查询","key":"12","sub_button":[]},{"type":"click","name":"周边搜索","key":"13","sub_button":[]},{"type":"click","name":"历史上的今天","key":"14","sub_button":[]}]},
//				 {"name":"休闲驿站","sub_button":[{"type":"click","name":"歌曲点播","key":"21","sub_button":[]},{"type":"click","name":"经典游戏","key":"22","sub_button":[]},{"type":"click","name":"美女电台","key":"23","sub_button":[]},{"type":"click","name":"人脸识别","key":"24","sub_button":[]},{"type":"click","name":"聊天唠嗑","key":"25","sub_button":[]}]},
//				 {"name":"更多体验","sub_button":[{"type":"click","name":"Q友圈","key":"31","sub_button":[]},{"type":"click","name":"电影排行榜","key":"32","sub_button":[]},{"type":"click","name":"幽默笑话","key":"33","sub_button":[]}]}
//				]}
//	          }

		System.out.println(json);
		
		if (null != json) {
			menu = (Menu) JSONObject.toBean(json.getJSONObject("menu"), Menu.class);
		}
		
		System.out.println("Menu:" + menu);
		return menu;
	}
	
	/** 
     * emoji表情转换(hex -> utf-16) 
     *  
     * @param hexEmoji 
     * @return 
     */  
    public static String emoji(int hexEmoji) {  
        return String.valueOf(Character.toChars(hexEmoji));  
    } 
}
